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IEICE TRANSACTIONS on Fundamentals

Secure Multiuser Communications with Multiple Untrusted Relays over Nakagami-m Fading Channels

Dechuan CHEN, Yunpeng CHENG, Weiwei YANG, Jianwei HU, Yueming CAI, Junquan HU, Meng WANG

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Summary :

In this letter, we investigate the physical layer security in multi-user multi-relay networks, where each relay is not merely a traditional helper, but at the same time, can become a potential eavesdropper. We first propose an efficient low-complexity user and relay selection scheme to significantly reduce the amount of channel estimation as well as the amount of potential links for comparison. For the proposed scheme, we derive the closed-form expression for the lower bound of ergodic secrecy rate (ESR) to evaluate the system secrecy performance. Simulation results are provided to verify the validity of our expressions and demonstrate how the ESR scales with the number of users and relays.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E102-A No.8 pp.978-981
Publication Date
2019/08/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E102.A.978
Type of Manuscript
LETTER
Category
Mobile Information Network and Personal Communications

Authors

Dechuan CHEN
  the Army Engineering University of PLA,Wu Han Zhong Yuan Electronics Group Co., Ltd.,Wu Han Zhong Yuan Communication Co., Ltd.
Yunpeng CHENG
  the Army Engineering University of PLA
Weiwei YANG
  the Army Engineering University of PLA
Jianwei HU
  the Army Engineering University of PLA
Yueming CAI
  the Army Engineering University of PLA
Junquan HU
  the Army Engineering University of PLA
Meng WANG
  the Army Engineering University of PLA

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